configs/solidrun_clearfog_gt_8k: new defconfig

Add support for the SolidRun Armada 8040 based Clearfog GT-8K. This
board has the same processor as the Macchiatobin, so we can reuse the
Macchiatobin U-Boot and image definitions.

The kernel fragment enables drivers that are necessary to make
networking ports work (SFP, Ethernet port, and Ethernet switch).

Cc: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/solidrun/clearfog_gt_8k/extlinux.conf

@@ -0,0 +1,4 @@
+label Clearfog GT-8K Linux
+  kernel /boot/Image
+  devicetree /boot/armada-8040-clearfog-gt-8k.dtb
+  append console=ttyS0,115200n8 root=/dev/mmcblk1p1 rootwait

board/solidrun/clearfog_gt_8k/genimage.cfg

@@ -0,0 +1 @@
+../macchiatobin/genimage.cfg

board/solidrun/clearfog_gt_8k/linux-extras.config

@@ -0,0 +1,4 @@
+CONFIG_MARVELL_PHY=y
+CONFIG_SFP=y
+CONFIG_NET_DSA=y
+CONFIG_NET_DSA_MV88E6XXX=y

board/solidrun/clearfog_gt_8k/post-build-mainline.sh

@@ -0,0 +1 @@
+../macchiatobin/post-build-mainline.sh

board/solidrun/clearfog_gt_8k/readme.txt

@@ -0,0 +1,61 @@
+Intro
+=====
+
+The default configuration described below will allow you to start
+experimenting with the buildroot environment for the SolidRun Clearfog GT-8K
+based on the Marvell Armada 8040 SoC.
+
+This default configuration will bring up the board and allow shell command
+line access through the serial console.
+
+How to build
+============
+
+  $ make solidrun_clearfog_gt_8k_defconfig
+  $ make
+
+How to write the SD card
+========================
+
+Once the build process is finished you will have an image file named
+"sdcard.img" in the output/images/ directory.
+
+Copy the bootable "sdcard.img" onto an SD card with "dd":
+
+  $ sudo dd if=output/images/sdcard.img of=/dev/sdX bs=1M conv=fsync
+
+How to boot the board
+=====================
+
+The Clearfog GT-8K can be setup to load the bootloader from different sources
+including eMMC, SPI flash, and SD-card.
+
+To select boot from SD-card the DIP switches in SW6 (at the bottom of the
+board) should be configured as follows:
+
+  SW6: 11010
+
+Insert the micro SDcard in the Cleargfog GT-8K and power it up.
+
+Serial console
+==============
+
+The serial console is accessible at the J27 pins header (TTL UART) with the
+following pinout (pin #1 is marked with triangle on the PCB):
+
+  pin #1: Ground
+  pin #2: Armada 8040 Rx
+  pin #3: Armada 8040 Tx
+
+Enable the switch (yellow) Ethernet ports
+=========================================
+
+To enable the Clearfog GT-8K internal switch port make sure to load the
+'mv88e6xxx' kernel module, and up the switch up-link port (eth2 by default):
+
+  modprobe mv88e6xxx
+  ifconfig eth2 up
+
+Then you can configure each switch port separately. These port are named
+'lan1' to 'lan4' by default. 'lan1' is closest to the USB port, while 'lan4'
+is closest to the blue Ethernet port.

board/solidrun/clearfog_gt_8k/uboot-fragment.config

@@ -0,0 +1 @@
+../macchiatobin/uboot-fragment.config